Monkey-wrench.



Np. 730,037. PATENTED JUNE2,"1903.

' J. S.,MILLER. Y

MONKEY WRENGH. I APPLICATION FILED 13B. 31, 19053.1

no 11011111.. I

Mag m4 Arromzys UNITED STATES Patented June 2, 1903;

" ATENT OFFICE.

MONKEY-WRENCH;

SPECIFICATION forming part of Letters Patent No. 730,037, dated June 2, 1903. Application filed February 21, 1903.' Serial No; 144,441. (No model.)

To all whom it may concern:

Be it known that I, JOHN S. MILLER, a citizen of the United States, residing at Mount Vernon, in the county of IVestchester and State of New York, have invented certain new and useful Improvements in Monkey- Wrenches, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide an improved monkey-Wrench which is simple in construction and operationtand the movable jaw of which is provided with improved locking devices, whereby it may be securely lockedin any desired position, said jaw being also provided with means whereby it may be conveniently adjusted to any desired position; and with these and other objects in view the invention consists in a monkey-wrench constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is a side-elevation of my'improved monkey-wrench; Fig. 2, a longitudinal section thereof; Fig. 3, a transverse section on the line 3 3 of Fig. 2, but showing the parts in a diiferent position; and Fig. 4, a partial section on the line 4 4 of Fig. 3.

In the practice of my invention I provide'a shank member a, which is of the usual form and one end of which is provided with a fixed jaw a and the other with a handle a The shank member a is oblong in cross section,

and the narrower sides thereof are provided with threads a and are segmental in crosssection, and mounted on said shank member is a slide 1), provided with a jaw b and the jaw 12 is integral with the slide 1) and constitutes the adjustable jaw. At the back of the slide 1) is a rectangular recess 19 in which is placed a nut c, the inner sides of which are threaded, as shown at 0 to correspond with the threads to on the shank member a, and these threads are separated longitudinally of the opposite sides of said nut by spaces 0 In the front side of the slide 1) is a chamber 11 which extends inwardly and communicates with the recesssb and with the bore or passage 11 in the slide 1), throughwhich the shank member a passes, and in the chamber 19 is pivoted a dog d, having a projecting finger 6V and a nose (1 which is adapted to enter radial recesses 0 formed in the face of the nut c. The dog (1 is held in place by a pin e, and a spring f is secured to the slide b insuch a manner as to force the nose of the dog into one of said radial recesses.

I11 the form of construction shown separate series of radial recesses c are formed in the opposite sides of the face of the nut c, and between these series at each side is formed another radial recess, the'last-named radial recesses being designated by the reference character c, the object of this construction being to facilitate the operation of the nut o and the locking thereof in such a position as to allow it to slide on the shank member a, and for this purpose the radial recesses c communicate with the blank spaces 0 in the opposite sides of the nut c.

It will be understood that when the nut c is in the position shown in Fig. 3 both said nut and the slide 1) are free to move longitudinally on the shank member a; but when said nut is in the position shown in Fig. 2 the said parts are locked to the shank member a. In order to adjust the slide 1) to any desired position on the shank member a, all that is necessary is to push forwardly on the fingerpiece (1- of the dog d and turn the nut 0 when a nice adjustment is desired; but when it is desired to move said slide through a considerable distance the nut c is turned so that the threads a on the shank member a will slide through the spaces 0 in said nut.

My improved monkey-wrench is simple in construction and operation and perfectly adapted to accomplish the result for which it is intended and is also comparatively inexpensive.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A monkey-wrench comprising the usual shank member provided at one end with a fixedjaw and at the other end with a handle, said shank member being oblong in crosssection, the wider sides thereof being flat and the narrow sides thereof being segmental in cross-section and provided with threads; a slide mounted on said shank member and provided in one side with a nut through which the shank member passes, said nut being also provided in the opposite sides thereof with threads separated by blank spaces; said nut being also provided in one face thereof with radial recesses; and a spring-operated dog pivoted in one side of said slide and adapted to operate in connection with said radial recesses, substantially as shown and described.

2. A monkey-wrench comprising the usual shank member provided at one end with a fixed jaw and at the other end with a handle, said shank member being provided with threads, a slide mounted on said shank mem- JOHN S. MILLER.

lVitnesses:

J. (3. LARSEN, F. A. STEWART. 

